Getting started with Burp Intruder - Port Swigger
Summary: PortSwigger's tutorial walks through configuring a Burp Intruder Sniper attack against the deliberately vulnerable Web Security Academy blog lab, sending a POST /login request with a payload position marked on the username parameter. Pasting a list of candidate usernames produces a payload count and request count of 101, and sorting the results by the Length column isolates one response that returns an Incorrect password error instead of Invalid username.
What you should know: A single response that differs only in length was enough to flag a valid username, after which the tutorial moves directly to brute-forcing the password - the same 101-request pattern works against any login form that answers differently for a real account than a fake one.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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